Utilize Pikalytics' data (generated via https://github.com/GriffinLedingham/smogon-usage-parser) to crunch type usage percentages in the VGC meta. As requested by: https://www.reddit.com/r/PokemonVGC/comments/fxw4w5/type_frequency_analyzer/

typeUsage.js

const Move = require('./Git/damage-calc/calc/dist/move')['Move'];
const data = require('./Git/pikalytics/server/data_json/2020-03/moveset/ss-1760.json');
const rankData = require('./Git/pikalytics/server/data_json/2020-03/ss-1760.json');

const monTypes = {};
const moveTypes = {}

for(let i in data) {
    const pokemon = data[i]
    const pokemonPercent = parseFloat(rankData[i]["Usage %"].replace('%', ''))

    for(let j in pokemon.types) {
        if(monTypes[pokemon.types[j]] === undefined) {
            monTypes[pokemon.types[j]] = pokemonPercent/100
        }
        else {
            monTypes[pokemon.types[j]] += pokemonPercent/100
        }
    }

    for(let z in pokemon.moves) {
        const move = pokemon.moves[z]
        if(move.type === undefined) continue;

        const moveData = new Move(8, move.move.trim())
        // Ignore defensive moves. Remove this line to include them.
        if(moveData.bp <= 0 || moveData.type === undefined) continue;

        if(moveTypes[move.type] === undefined) {
            moveTypes[move.type] = pokemonPercent/100 * (parseFloat(move.percent)/100)
        }
        else {
            moveTypes[move.type] += pokemonPercent/100 * (parseFloat(move.percent)/100)
        }
    }
}

let typeTotal = 0

for(let k in monTypes) {
    typeTotal += monTypes[k]
}

for(let l in monTypes) {
    monTypes[l] = (monTypes[l] / typeTotal)*100
}

console.log('Mon Types:')
console.log(monTypes)

let moveTotal = 0

for(let p in moveTypes) {
    moveTotal += moveTypes[p]
}

for(let m in moveTypes) {
    moveTypes[m] = (moveTypes[m] / moveTotal)*100
}

console.log('Move Types:')
console.log(moveTypes)